Steam generator and flusher



('No Model.)

W. 0. KOETZNER & E. 0. LIVINGSTON? STEAM GENERATOR AND 'FLUSHEPM No.446,223. Patented Feb. 10,1891.

IN VENTOR5 0% WITNESSES:

611 I 6 6 m dv-zv ATTORNEY.

- tion of the same on the line 2 2.

UNITED STATES PATENT OFFICE.

IVILLIAM O. KOETZNER AND EDlVIN C. LIVINGSTON, OF BALTIMORE,

' MARYLAND.

STEAM GENERATOR AND FLUSHE'R.

SPECIFICATION forming part of Letters Patent No. 446,223, dated February10, 1891.

V Application filed April 1, 1890. Serial No. 346,213. (No model.)

To all whom it may concern.-

Be it known that we, WILLIAM C. Konrz- NER and EDWIN O. LIVINGSTON,citizens of the United States, residing at Baltimore, in the State ofMarylanchhave invented certain new and useful Improvements in SteamGenerators and Flushers, of which the following is a specification.

This invention relates to an apparatus for heating water and generatingsteam for flushin g and cleaning beverage-pipes, such as pipes used indrawing beer from the cask. The invention is illustrated in theaccompanying drawings, in which- Figure 1 is a sectional elevation ofthe improved apparatus. Fig. 2 is a horizontal sec- Figs. 3, 4, 5, and 6illustrate different positions of the three-way cock. Fig. 7 is across-section of the combined hot water and steampipe.

The object of the invention is to provide a simple and inexpensiveapparatus to be used either by connection with the water-supply of thecity or by connection with a water-tank for heating water and generatingsteam for cleansing and flushing beer and other pipes.

The letter A designates a sheet-metal shell or case, which istapered,being largest at the top a and smallest at the bottom a. Thisshell is supported ona base 13, which is provided with air-inlets b.iVithin the shell and attached to its walls are three upright bars 0,which sustain the coil 0 and boiler D within the coil. The boiler D istapering, being largest at the arched top d and smallest at the bottomcl. Its wall is provided with spiral steps (1 and the coils of the pipe0 are outside of the boiler and have position in the angular groovesformed by the spiral steps around.- The lower end Z- of the coil makesconnection with the boiler near the bottom and the upper end m makesconnection near the top. ater from the boiler D will enter the lower endof the coil at Z and circulate around the coils and then pass from thecoil at the t'op end on into the boiler D. By this construction the heatof the burnerEis very effective in quickly raising the temperature 01":the water. I prefer to leave some space between the coils and thesurface of the spiral steps, as by so doing the hot air ascending fromthe burner E may have better access to the surface of the steps and alsoentirely around thepipes.

The boiler D is a closed boiler and of strength capable of withstandinga pressure that will allow sufficient steam to be generated to forcethrough the pipes to be cleaned. The top (1 of the boiler has ascrew-threaded collar 6, which opens into the boiler, and the combinedsteam and hot-water pipe F is oonnected to the collar. A shoulder f ison the pipe, and .a suitable washer can be inserted at g between thecollar 6 and shoulder f, and thereby make a tight joint. The pipe Fabove the boiler has a longitudinal division h, which forms two passages11 j, one being for water and the other for steam. That side or passaget' which is for water has a down-projecting end i, whichenters theboiler and extends to near the bottom d, as will be 'seen in Fig. 1,where the side of the coils and boiler are broken away to exhibit thedown-progecting end 2'. The side or passage j for steam opens inside ofthe boiler at the top. By this construction of combined hotwater andsteam-pipe provision is made, when desired, for the outlet of steam tothe pipes to be cleaned, or by confining the steam in the boiler. andthereby creating a steampressure in the top of the boiler hot water maybe forced into the down-projecting end 1" of the pipe, and thence upwardto the pipes to be cleaned. Abranch pipe 76 is connected with thesteam-passage j, and is provided with a safety-valve G.

The combined steam and hot-water pipe F has at its top end a branch pipeH for cold water. A three-way cock I is in the pipe F at the upper endof the longitudinal division h, where also the said cold-water pipeintersects, and this cock controls the flow of cold water, steam, andhot water, so thatcold water may be cut off entirely, as shown by theposition seen in Figs. 4 and 5, or cold water directed down into theboiler, as shown by the position in Figs. 1 and 3, or steam directedfrom the boiler to the pipes to be cleaned, as shown by the position inFig. 4, or hot water directed from the boiler to the pipes to becleansed, as shown by the position in Fig. 5, or cold water passed fromthe cold-water pipe II direct to the pipes to be cleansed, as shown bythe position in Fig. 6. Above the three-way cock I is a pipe J, whichcan be readily connected with the pipes to be cleaned.

The cold-water pipe I-I may be connected with the water-supply pipes ofthe city, or in small towns or villages where there are no water systemsthis pipe 11 may connect with a water-tank elevated'above the boiler, or

instead of being elevated such water-tank may be supplied witha suitableforce-pump by which water can be supplied to the boiler.

The cold-water pipe II has a right-angled connection 11, and a T-joint Nat the angle provides for connecting a branch pipe'o,

I the said cock 1) then serves to determine the water-line or highestpoint of water in the boiler, and when water flows through it the cock Imust be turned to stop the filling. The T-joint at the angle-connectionhas an internal V-shaped guide g, which points directly toward the endor bore of the cold-Water pipe H. This V-shaped guide q, branch pipe 0,and cook 19 enable the pipes H, H, and J to be used as a' siphon whenthe supply. comes from a water-tank to flow cold water through the pipesthat are beingcleansed, as hereinafter stated.

The burner E may be of any desired kind. A gas Bunsen burner ispreferred.

The'outer shell or case A has in its crown ortop a central air-openingr. (Indicated in Fig. 1 by the narrow white-line space.) The pipe Fpasses up through this opening, and the air-draft and products ofcombustion escape at this opening 0. The shellA confines the heat.

From the foregoing description it will be seen that the pipe J willcarry superheated steam to the pipes to be cleaned; also, that hotboiling water may be forced to and through said pipes, and that thesecleansing elements-steam and hot watermay be used alternately. After thepipes to be cleansed have been subjected to the cleaning'action of thesteam and hot water it is desirable to cool them at once. To this end itis only necessary to turn the cock I to the position shown in Fig. (3,whereupon if the supply turned to allow steam under pressure to forceits way past the V-shaped guide (1, and thereby, on the ejectorprinciple, draw water from the pipe II to start the flow of cold waterthrough the pipes II and J and the pipes to be cooled, and a suitablepipe or hose attached to the said pipes to becooled to act as the longarm of a siphon will cause the cold water to flow.-

Having described our invention, we claim.

1. The combination of a sheet-metal shell or case A, which is tapering,being largest at the top, a boiler-vessel D, also tapering and fittedwithin the said shell, a pipe coiled out- .side ofand fitted close tothe exterior of said tapered boiler,with one end connected thereto nearthe bottom and the other end near the top, a pipe at the top of theboiler for th outlet of steam, a pipe opening into the boiler near thebottom for the outlet of hot water, and a cock to control the said steamand hot water.

2. The combination of a sheet-metal shell or case A, which is tapering,being largest at the top, a boiler-vessel D, also tapering and largestat the top and having spiral steps in its wall, and a pipe coiledoutside of the boiler,

with a coil in each groove that is formed by the said spiral steps andthe ends of the coiled pipe connected with the boiler.

The combination of a boiler, a pipe connected with the top of the boilerand having a longitudinal division which forms two passages t' j, one ofwhich projects down into the boiler to near the bottom and the otheropens into the boiler at the top, a supply-pipe I-I, connected with thetwo-passage pipe at the outer end of the said longitudinal division, athree-way cock I in the said pipe at the intersection of the branchpipe, and a deliverypipe J, connected outside of said cock.

4. The combination of a boiler, a pipe con nected with the top of theboiler and having a longitudinal division which forms two passages t'5', one of which projects down into the boiler to near the bottom andthe other opens into the boiler at the top, a supply-pipe H, connectedwith the two-passage pipe at the outer end of the said longitudinaldivision, a three-way cock I in the said pipe at the in tersection ofthe branch pipe, a delivery-pipe J, connected outside of said cook, abranch pipe 0, connecting the supply-pipe and the boilerat a point whichshall determine the high-water line, and a three-way cock 1) in thebranch pipe. I

5. The combination of a boiler, a pipe con nected with the top of theboiler and having a longitudinal division which forms two passages z'j,one of which projects down into the boiler to near the bottom and theother opens into the boiler at the top, a supply-pipe II, connected withthe two-passage pipe at the outer end of the said longitudinal division,a three-way cock I in the said pipe at the intersection of the branchpipe,a delivery-pipe J, connected outside of said cock, 5 T-joint Intestimony whereof we affix oursignatnres attached to the supply-pipe andhaving an in presence of two witnesses.

internal V-shaped guide g, which points (11- XVILLIAM C. KOETZNER.rectly toward the end or bore thereof, a branch EDWIN C. LIVINGSTON.

pipe 0, connecting the said T-jointand the Vit-nesses: upper part of theboiler, and a cock in the JOHN E. MORRIS, branch pipe. JNO. T. MADDOX.

